Last updated: October 31, 2026 (ET). Updated as verified information becomes available.
Control of Congress in 2026 is likely to be decided in a limited number of competitive states and districts. This guide lists races that independent ratings organizations describe as competitive. Ratings are opinions, change often and are always attributed with a date.
Where to check current ratings
- Cook Political Report
- Sabato’s Crystal Ball (University of Virginia Center for Politics)
- Inside Elections
Senate races to follow
Ballotpedia says it is following 12 Senate seats as battleground races in 2026, three held by Democrats and nine held by Republicans. Ballotpedia notes that Democrats are defending seats in Georgia and Michigan, states President Donald Trump won in 2024, and Republicans are defending a seat in Maine, a state Kamala Harris won.
Ballotpedia also lists Senate seats left open by retirements, including those of Republicans Thom Tillis of North Carolina and Joni Ernst of Iowa and Democrat Jeanne Shaheen of New Hampshire.
Poll closing times confirmed from official state sources are in our poll closing guide.
